diff --git a/pyproject.toml b/pyproject.toml
index f12a6b1..ea4d261 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,7 +11,7 @@ license = "GPL-3.0-or-later"
 requires-python = ">=3.9,<3.14"
 dependencies = [
     "pyside6-essentials>=6.4.2,<7.0",
-    "opencv-python-headless>=4.7,<5.0",
+    "opencv-python-headless>=4.7,<6.0",
     "numpy>=1.23,<3.0",
     "numba>=0.56",
     "rawpy>=0.18",
diff --git a/requirements.txt b/requirements.txt
index 937a50b..5edabd9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@
 pyside6-essentials>=6.4.2,<7.0
 
 # Image processing
-opencv-python-headless>=4.7,<5.0
+opencv-python-headless>=4.7,<6.0
 numpy>=1.23,<3.0
 numba>=0.56
 rawpy>=0.18